What would the city be like if George Dance's design for London Bridge been built?

This design for a twin London Bridge was submitted by architect George Dance, and the plans for it were published in Hansard in July 1800. William Daniell painted this impression of it in 1802. The twin bridges would allow road traffic to cross the Thames at all times, as one path would always be open.

It would have created a sweeping open expanse around The Monument on the north bank, and a similar crescent on the south bank. These areas are now heavily developed, and it's interesting to stop and consider what the city would look like now had this design become reality (and then survived the war intact).

The painting is on display at the Guildhall Art Gallery in London, the picture above is from the BBC web site. You can view the plan itself on the British Museum web site.